DuraVent DuraTech 5-8 - Manual (Page 17)

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DuraTech Chimney (Table 2). The various
support components are adjustable in length
from the wall to better fit your installation.
There are two options when installing a Tee-
Supported installation: the Tee Support above
the Tee, or the Tee Support below the Tee.
The required parts and general configuration
are as shown in Fig.24, 25, 26 and 27.
1. Place Appliance: Follow Step 1 from
“Ceiling-Supported” method detailed earlier.
2. Locate, Cut & Frame Opening: Determine
the location where the chimney will pass through
the wall. The chimney should pass through
the wall, centered between two studs. The
height of the penetration can be determined
by positioning sections of stove pipe until you
have the desired configuration (refer to the
appliance manufacturer’s installation instructions
for restrictions on stove pipe). Cut and frame
an opening in the inner and outer walls at this
location. Refer to Table 1 for the appropriate
framing dimensions.
3. Install Wall Thimble: The Wall Thimble
is a two-piece component which includes
the Interior half and the Exterior half. On the
outside wall, install the back portion of the Wall
Thimble. Center the back portion of the Wall
Thimble (with shield inside wall) in the framed
opening of the outside wall (Fig.24). Be sure
to seal the flange of the Wall Thimble around
the wall by using a non-hardening waterproof
sealant. Attach the back portion of the Wall
Thimble to the outside wall using at least (4)
8-penny nails or (4) #8, 1-1/2” wood screws.
There must be a continuous shield within the
wall. If the two halves of the Wall Thimble do not
overlap, a field-fabricated extension constructed
out of 26-gauge galvanized or stainless steel is
needed.
4. Install Tee Support: Install the Tee Support
on the outside wall. Position Tee Support so that
the chimney Tee will be centered inside the Wall
Thimble (Fig.24, 25, 26 & 27). The Tee Support
may be installed either above the Tee or below
the Tee (within one pipe section), as seen in
Fig.25. See Table 2 for weight bearing values of
components. Important: Verify that Tee Support
is level, and secure the Support to the wall using
(4) #8, 2-1/2” screws for each side. Slide support
base over leg brackets to adjust for desired
clearance to wall, and secure by tightening bolts
(Fig.24 & 25).
5. Install Tee and Cleanout Chimney Section:
Twist lock the Tee onto a desired length of
Chimney to be used as the cleanout section.
Use only one chimney section (any length) to
attach to bottom of the Tee. Tighten support
band around chimney section at proper height
to insure that Tee is centered through Wall
Thimble (Fig.25). Use the 1/2” sheet metal
screws provided to insure a tight connection
between support band and chimney section.
Connect support band to support base using
the 1/2” sheet metal screws provided (Fig.25).
Twist lock Tee Cap into bottom of Chimney
Cleanout section.
6. Install Branch onto Tee: From inside
the house, attach the Chimney Branch up
to 24” chimney section, depending on wall
thickness, positioned horizontally used to pass
through the wall) to the Tee by twist locking
it clockwise. Important: The Chimney section
used to penetrate through the wall must extend
at least 6” into the room (Fig.24 & 27). Use
high-temperature sealant (500ºF) to seal
between the Wall Thimble and the Chimney on
the outer wall.
7. Install Cover Plate and Finishing Collar:
After the Chimney Branch is secured in place
(penetrating at least 6” into the room), slide
the Cover Plate over the Branch and attach
it to the framing using (4) 1-1/4” long, round
head wood screws. Be sure that the Branch
is centered in the opening of the Cover Plate.